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zloy xaker [14]
3 years ago
5

Please help ASAP What is the value of x? Enter your answer in the box.

Mathematics
2 answers:
Iteru [2.4K]3 years ago
8 0

Answer:

x=27

Step-by-step explanation:

We have been given a diagram of 2 triangles and we are asked to find the value of x.

We can see that triangle CDQ and RDB share a common angle and line CQ is parallel to line RB.

Since the corresponding angles formed by two parallel lines are equal, therefore,

m\angle DQC=m\angle DBR

m\angle DCQ=m\angle DRB

As all the angles is both triangles are equal, therefore, \Delta CDQ\sim\Delta RDB.

As both triangles are similar, so their corresponding sides will be proportional.

We can set a proportion for the sides of our given triangles as:

\frac{x}{18}=\frac{39}{26}

\frac{x}{18}*18=\frac{39}{26}*18

x=\frac{3}{2}*18

x=3*9

x=27

Therefore, the value of x is 27.

guapka [62]3 years ago
4 0

Just took the test and got the the correct answer *\(♡°▽°♡)/*

Look at the image down below!!

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faust18 [17]

Answer: the following are required for IV-3 to have condition

Explanation:

-II-4 passes an X b chromosome to III-4 (probability = 1/2).

-If III-4 has the genotype X B X b (accounted for by the above probability), then she passes an X b chromosome to IV-3 (probability = 1/2).

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All of these requirements are needed in sequence, so you apply the product rule here, too (1/2 x 1/2 x 1/2 = 1/8).

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6 0
3 years ago
Solve the system of equations,
lorasvet [3.4K]

Answer:

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y = -19/2

Step-by-step explanation:

5x - 17 = 4y + 7x

5x - 7x - 4y = 17

-2x - 4y = 17

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-2x - 4y = 17 | ×2 |

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___________+

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x = 21/2

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7 0
2 years ago
Prove that every integer greater than 7 can be written by using 3's and 5's only. that is, for every n > 7 there exist non-ne
Taya2010 [7]
An integer may be a multiple of 3.
An integer may be 1 greater than a multiple of 3.
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Let's consider a number which is a multiple of 3.  Clearly, we can write 3+3+3+3+... until we reach the number.  It can be written as only 3's.

Let's consider a number which is 2 greater than a multiple of 3.  If we subtract 5 from that number, it'll be a multiple of 3.  That means we can write the number as 5+3+3+3+3+...  Of course, the number must be at least 8.

Let's consider a number which is 1 greater than a multiple of 3.  If we subtract 5 from that number, it'll be 2 greater than a multiple of 3.  If we subtract another 5, it'll be a multiple of 3.  That means we can write the number as 5+5+3+3+3+3+...  Of course, the number must be at least 13.

That's it.  We considered all the numbers.  We forgot 9, 10, 11, and 12, but these are easy peasy.

Beautiful question.
4 0
3 years ago
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Paladinen [302]

Answer:

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